Reorganize CoolPropTools.h into smaller modules

include/CPfilepaths.h

@@ -0,0 +1,30 @@
+#ifndef COOLPROP_FILE_PATH_H
+#define COOLPROP_FILE_PATH_H
+
+#include <string>
+#include <vector>
+
+/// Get the user's home directory;  It is believed that is is always a place that files can be written
+std::string get_home_dir(void);
+
+/// Return true if path exists
+bool path_exists(const std::string &path);
+
+/// Make directory and all required intermediate directories
+void make_dirs(std::string file_path);
+
+/// Get the size of a directory in bytes
+#if defined(__ISWINDOWS__)
+unsigned long long CalculateDirSize(const std::wstring &path, std::vector<std::wstring> *errVect = NULL);
+#else
+unsigned long long CalculateDirSize(const std::string &path);
+#endif
+
+// Get all the contents of a file and dump into a STL string
+// Thanks to http://stackoverflow.com/questions/2602013/read-whole-ascii-file-into-c-stdstring
+std::string get_file_contents(const char *filename);
+
+/// Get all the contents of a binary file
+std::vector<char> get_binary_file_contents(const char *filename);
+
+#endif